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It consists of temporal and spatial cosmology, the temporal cosmology being the division of the existence of a 'world' into four discrete moments (the creation, duration, dissolution, and state of being dissolved; this does not seem to be a canonical division, however). The spatial cosmology consists of a vertical cosmology, the various planes of beings, their bodies, characteristics, food, lifespan, beauty and a horizontal cosmology, the distribution of these world-systems into an "apparently" infinite sheet of universes. The existence of world-periods (moments, kalpas), is well attested to by the Buddha.
The historical Buddha (Gautama Buddha) made references to the existence of aeons (the duration of which he describes by using metaphor), and simultaneously intimates his knowledge of past events, such as the dawn of human beings in their coarse and gender-split forms, the existence of more than one sun at certain points in time, and his ability to convey his voice vast distances, as well as the ability of his disciples (who if they fare accordingly) to be reborn in any one of these planes (should they so choose).
The self-consistent Buddhist cosmology, which is presented in commentaries and works of Abhidharma in both Theravāda and Mahāyāna traditions, is the end-product of an analysis and reconciliation of cosmological comments found in the Buddhist sūtra and vinaya traditions. No single sūtra sets out the entire structure of the universe, but in several sūtras the Buddha describes other worlds and states of being, and other sūtras describe the origin and destruction of the universe. The synthesis of these data into a single comprehensive system must have taken place early in the history of Buddhism, as the system described in the Pāli Vibhajyavāda tradition (represented by today's Theravādins) agrees, despite some minor inconsistencies of nomenclature, with the Sarvāstivāda tradition which is preserved by Mahāyāna Buddhists.
The picture of the world presented in Buddhist cosmological descriptions cannot be taken as a literal description of the shape of the universe. It is inconsistent, and cannot be made consistent, with astronomical data that were already known in ancient India. However, it is not intended to be a description of how ordinary humans perceive their world; rather, it is the universe as seen through the divyacakṣus (Pāli: dibbacakkhu दिव्यचक्ख्खु), the "divine eye" by which a Buddha or an arhat who has cultivated this faculty can perceive all of the other worlds and the beings arising (being born) and passing away (dying) within them, and can tell from what state they have been reborn and into what state they will be reborn. The cosmology has also been interpreted in a symbolical or allegorical sense (for Mahayana teaching see Ten spiritual realms).
Buddhist cosmology can be divided into two related kinds: spatial cosmology, which describes the arrangement of the various worlds within the universe; and temporal cosmology, which describes how those worlds come into existence, and how they pass away.
Spatial cosmology can also be divided into two branches. The vertical (or cakravāla; देवनागरीः चक्रवाल) cosmology describes the arrangement of worlds in a vertical pattern, some being higher and some lower. By contrast, the horizontal (sahasra) cosmology describes the grouping of these vertical worlds into sets of thousands, millions or billions.
In the vertical cosmology, the universe exists of many worlds (lokāḥ; देवानागरीः लोक/लोको) – one might say "planes/realms" – stacked one upon the next in layers. Each world corresponds to a mental state or a state of being. A world is not, however, a location so much as it is the beings which compose it; it is sustained by their karma and if the beings in a world all die or disappear, the world disappears too. Likewise, a world comes into existence when the first being is born into it. The physical separation is not so important as the difference in mental state; humans and animals, though they partially share the same physical environments, still belong to different worlds because their minds perceive and react to those environments differently.
The vertical cosmology is divided into thirty-one planes of existence and the planes into three realms, or dhātus, each corresponding to a different type of mentality. These three realms (Tridhātu) are the Ārūpyadhātu (4 Realms), the Rūpadhātu (16 Realms), and the Kāmadhātu (15 Realms). This Sakwala/solar system or plane of existence comprises the "five or six desire realms". In some instances all of the beings born in the Ārūpyadhātu and the Rūpadhātu are informally classified as "gods" or "deities" (devāḥ), along with the gods of the Kāmadhātu, notwithstanding the fact that the deities of the Kāmadhātu differ more from those of the Ārūpyadhātu than they do from humans. It is to be understood that deva is an imprecise term referring to any being living in a longer-lived and generally more blissful state than humans. Most of them are not "gods" in the common sense of the term, having little or no concern with the human world and rarely if ever interacting with it; only the lowest deities of the Kāmadhātu correspond to the gods described in many polytheistic religions.
The term "brahmā; देवनागरीः ब्रह्मा" is used both as a name and as a generic term for one of the higher devas. In its broadest sense, it can refer to any of the inhabitants of the Ārūpyadhātu and the Rūpadhātu. In more restricted senses, it can refer to an inhabitant of one of the eleven lower worlds of the Rūpadhātu, or in its narrowest sense, to the three lowest worlds of the Rūpadhātu (Plane of Brahma’s retinue) A large number of devas use the name "Brahmā", e.g. Brahmā Sahampati सहम्पत्ति महाब्रह्मा, Brahmā Sanatkumāra ब्रह्मा सनतकुमार, Baka Brahmā बक ब्रह्मा, etc. It is not always clear which world they belong to, although it must always be one of the worlds of the Rūpadhātu. According to the Ayacana Sutta, Brahmā Sahampati, who begs the Buddha to teach Dhamma to the world, resides in the Śuddhāvāsa worlds.
Formless Realm (Ārūpyadhātu अरुपधातु)
The Ārūpyadhātu (Sanskrit) or Arūpaloka (Pāli) (Tib: gzugs med pa'i khams; Jpn: 無色界 Mushiki-kai; देवनागरीः अरुपधातु / अरुपलोक) or "Formless realm" would have no place in a purely physical cosmology, as none of the beings inhabiting it has either shape or location; and correspondingly, the realm has no location either. This realm belongs to those devas who attained and remained in the Four Formless Absorptions (catuḥ-samāpatti चतु-समापत्ती) of the arūpadhyānas in a previous life, and now enjoys the fruits (vipāka) of the good karma of that accomplishment. Bodhisattvas, however, are never born in the Ārūpyadhātu even when they have attained the arūpadhyānas.
There are four types of Ārūpyadhātu devas, corresponding to the four types of arūpadhyānas:
Arupa Bhumi (Arupachara Brahmalokas or Immaterial/Formless Brahma Realms)
- Naivasaṃjñānāsaṃjñāyatana or Nevasaññānāsaññāyatana (Tib: 'du shes med 'du shes med min; Jpn: 非有想非無想処; देवनागरीः नैवसंज्ञानासंज्ञायातन) "Sphere of neither perception nor non-perception". In this sphere the formless beings have gone beyond a mere negation of perception and have attained a liminal state where they do not engage in "perception" (saṃjñā, recognition of particulars by their marks) but are not wholly unconscious. This was the sphere reached by Udraka Rāmaputra (Pāli: Uddaka Rāmaputta), the second of the Buddha's original teachers, who considered it equivalent to enlightenment. Total life span on this realm in human years - 84,000 Maha Kalpa (Maha Kalpa = 4 Asankya Kalpa). This realm is placed 5,580,000 Yojanas ( 1 Yojana = 16 Miles) above the Plane of Nothingness (Akiknchaknkayatana).
- Ākiṃcanyāyatana or Ākiñcaññāyatana (Tib: ci yang med; Jpn: 無所有処 mu sho u sho; देवनागरीः अकिञ्चानयातन) "Sphere of Nothingness" (literally "lacking anything"). In this sphere formless beings dwell contemplating upon the thought that "there is no thing". This is considered a form of perception, though a very subtle one. This was the sphere reached by Ārāḍa Kālāma (Pāli: Āḷāra Kālāma), the first of the Buddha's original teachers; he considered it to be equivalent to enlightenment. Total life span on this realm in human years - 60,000 Maha Kalpa. This realm is placed 5,580,000 yojanas above the Plane of Infinite Consciousness(Viknknanaknchayathana).
- Vijñānānantyāyatana or Viññāṇānañcāyatana or more commonly the contracted form Viññāṇañcāyatana (Tib: rnam shes mtha' yas; Jpn: 識無辺処 shiki mu hen jo; देवनागरीः विज्ञानायातन) "Sphere of Infinite Consciousness". In this sphere formless beings dwell meditating on their consciousness (vijñāna) as infinitely pervasive. Total life span on this realm in human years - 40,000 Maha Kalpa. This realm is placed 5,580,000 yojanas above the Plane of Infinite Space(Akasanknayathanaya)
- Ākāśānantyāyatana or Ākāsānañcāyatana (Tib: nam mkha' mtha' yas; Jpn: 空無辺処 kū mu hen jo; देवनागरीः अाकाशनायातन) "Sphere of Infinite Space". In this sphere formless beings dwell meditating upon space or extension (ākāśa) as infinitely pervasive. Total life span on this realm in human years - 20,000 Maha Kalpa. This realm is placed 5,580,000 yojanas above the Akanita Brahma Loka — Highest plane of pure abodes.
Form Realm (Rūpadhātu)
The Rūpadhātu (Pāli: Rūpaloka; Tib: gzugs kyi khams; Jpn: 色界 Shiki-kai; देवानागरीः रुपलोक/रुपधातु) or "Form realm" is, as the name implies, the first of the physical realms; its inhabitants all have a location and bodies of a sort, though those bodies are composed of a subtle substance which is of itself invisible to the inhabitants of the Kāmadhātu. According to the Janavasabha Sutta, when a brahma (a being from the Brahma-world of the Rūpadhātu) wishes to visit a deva of the Trāyastriṃśa heaven (in the Kāmadhātu), he has to assume a "grosser form" in order to be visible to them. There are 17-22 Rūpadhātu in Buddhism texts, the most common saying is 18.
The beings of the Form realm are not subject to the extremes of pleasure and pain, or governed by desires for things pleasing to the senses, as the beings of the Kāmadhātu are. The bodies of Form realm beings do not have sexual distinctions.
Like the beings of the Ārūpyadhātu, the dwellers in the Rūpadhātu have minds corresponding to the dhyānas (Pāli: jhānas). In their case it is the four lower dhyānas or rūpadhyānas॥रुपध्यान. However, although the beings of the Rūpadhātu can be divided into four broad grades corresponding to these four dhyānas, each of them is subdivided into further grades, three for each of the four dhyānas and five for the Śuddhāvāsa devas, for a total of seventeen grades (the Theravāda tradition counts one less grade in the highest dhyāna for a total of sixteen).
Physically, the Rūpadhātu consists of a series of planes stacked on top of each other, each one in a series of steps half the size of the previous one as one descends. In part, this reflects the fact that the devas are also thought of as physically larger on the higher planes. The highest planes are also broader in extent than the ones lower down, as discussed in the section on Sahasra cosmology. The height of these planes is expressed in yojanas, a measurement of very uncertain length, but sometimes taken to be about 4,000 times the height of a man, and so approximately 4.54 miles (7.31 km).
The Śuddhāvāsa (Pāli: Suddhāvāsa; Tib: gnas gtsang ma; देवनागरीः शुद्धावास) worlds, or "Pure Abodes", are distinct from the other worlds of the Rūpadhātu in that they do not house beings who have been born there through ordinary merit or meditative attainments, but only those Anāgāmins ("Non-returners") who are already on the path to Arhat-hood and who will attain enlightenment directly from the Śuddhāvāsa worlds without being reborn in a lower plane. Every Śuddhāvāsa deva is therefore a protector of Buddhism. (Brahma Sahampati, who appealed to the newly enlightened Buddha to teach, was an Anagami under the previous Buddha). Because a Śuddhāvāsa deva will never be reborn outside the Śuddhāvāsa worlds, no Bodhisattva is ever born in these worlds, as a Bodhisattva must ultimately be reborn as a human being.
Since these devas rise from lower planes only due to the teaching of a Buddha, they can remain empty for very long periods if no Buddha arises. However, unlike the lower worlds, the Śuddhāvāsa worlds are never destroyed by natural catastrophe. The Śuddhāvāsa devas predict the coming of a Buddha and, taking the guise of Brahmins, reveal to human beings the signs by which a Buddha can be recognized. They also ensure that a Bodhisattva in his last life will see the four signs that will lead to his renunciation.
The five Śuddhāvāsa worlds are:
- Akaniṣṭha or Akaniṭṭha; देवनागरीः अकनिठ्ठ / अकनिष्ठ – World of devas "equal in rank" (literally: having no one as the youngest). The highest of all the Rūpadhātu worlds, it is often used to refer to the highest extreme of the universe. The current Śakra will eventually be born there. The duration of life in Akaniṣṭha is 16,000 kalpas (Vibhajyavāda tradition). Mahesvara (Shiva) the ruler of the three realms of samsara is said to dwell here. The height of this world is 167,772,160 yojanas above the Earth (approximately the distance of Saturn from Earth).
- Sudarśana सुर्दशन or Sudassīसुदस्सी – The "clear-seeing" devas live in a world similar to and friendly with the Akaniṣṭha world. The height of this world is 83,886,080 yojanas above the Earth (approximately the distance of Jupiter from Earth).
- Sudṛśa सुर्दश or Sudassa सुदस्स – The world of the "beautiful" devas are said to be the place of rebirth for five kinds of anāgāmins. The height of this world is 41,943,040 yojanas above the Earth.
- Atapaअताप or Atappaअतप्प – The world of the "untroubled" devas, whose company those of lower realms wish for. The height of this world is 20,971,520 yojanas above the Earth (approximately the distance of Sun from Earth).
- Avṛhaअभ्रह or Avihaअभिह – The world of the "not falling" devas, perhaps the most common destination for reborn Anāgāmins. Many achieve arhatship directly in this world, but some pass away and are reborn in sequentially higher worlds of the Pure Abodes until they are at last reborn in the Akaniṣṭha world. These are called in Pāli uddhaṃsotas, "those whose stream goes upward". The duration of life in Avṛha is 1,000 kalpas (Vibhajyavāda tradition). The height of this world is 10,485,760 yojanas above the Earth (approximately the distance of Mars from Earth).
Bṛhatphala worlds भ्रतफल
The mental state of the devas of the Bṛhatphala worlds (Jpn: 四禅九天) corresponds to the fourth dhyāna, and is characterized by equanimity (upekṣā). The Bṛhatphala worlds form the upper limit to the destruction of the universe by wind at the end of a mahākalpa (see Temporal cosmology below), that is, they are spared such destruction.
- Asaññasatta अासनसत्त (Sanskrit: Asaṃjñasattva असम्जनासत्व) (Vibhajyavāda tradition only) – "Unconscious beings", devas who have attained a high dhyāna (similar to that of the Formless Realm), and, wishing to avoid the perils of perception, have achieved a state of non-perception in which they endure for a time. After a while, however, perception arises again and they fall into a lower state.
- Bṛhatphalaभ्रतफल or Vehapphala वेहफल (Tib: 'bras bu che) – Devas "having great fruit". Their lifespan is 500 mahākalpas. (Vibhajyavāda tradition). Some Anāgāmins are reborn here. The height of this world is 5,242,880 yojanas above the Earth.(approximately the distance of Venus from Earth)
- Puṇyaprasava पुण्यप्रसभ (Sarvāstivāda tradition only; Tib: bsod nams skyes;देवनागरीः पुन्यप्रसभ) – The world of the devas who are the "offspring of merit". The height of this world is 2,621,440 yojanas above the Earth.
- Anabhrakaअनभक्र (Sarvāstivāda tradition only; Tib: sprin med; देवनागरीः अनभ्राक) – The world of the "cloudless" devas. The height of this world is 1,310,720 yojanas above the Earth.
The mental state of the devas of the Śubhakṛtsna worlds (Jpn: 三禅三天; देवनागरीः शुभक्षण) corresponds to the third dhyāna, and is characterized by a quiet joy (sukha). These devas have bodies that radiate a steady light. The Śubhakṛtsna worlds form the upper limit to the destruction of the universe by water at the end of a mahākalpa (see Temporal cosmology below), that is, the flood of water does not rise high enough to reach them.
- Śubhakṛtsna or Subhakiṇṇa / Subhakiṇha (Tib: dge rgyas;देवनागरीः शुभक्षिण्ण) – The world of devas of "total beauty". Their lifespan is 64 mahākalpas (some sources: 4 mahākalpas) according to the Vibhajyavāda tradition. 64 mahākalpas is the interval between destructions of the universe by wind, including the Śubhakṛtsna worlds. The height of this world is 655,360 yojanas above the Earth.
- Apramāṇaśubha or Appamāṇasubha (Tib: tshad med dge;देवनागरीः अप्रमाणशुभ) – The world of devas of "limitless beauty". Their lifespan is 32 mahākalpas (Vibhajyavāda tradition). They possess "faith, virtue, learning, munificence and wisdom". The height of this world is 327,680 yojanas above the Earth.
- Parīttaśubha or Parittasubha (Tib: dge chung; देवनागरीः परित्तशुभ) – The world of devas of "limited beauty". Their lifespan is 16 mahākalpas. The height of this world is 163,840 yojanas above the Earth.
The mental state of the devas of the Ābhāsvara worlds (Jpn: 二禅三天; देवनागरीः अभश्वभारा) corresponds to the second dhyāna, and is characterized by delight (prīti) as well as joy (sukha); the Ābhāsvara devas are said to shout aloud in their joy, crying aho sukham! ("Oh joy!"). These devas have bodies that emit flashing rays of light like lightning. They are said to have similar bodies (to each other) but diverse perceptions.
The Ābhāsvara worlds form the upper limit to the destruction of the universe by fire at the end of a mahākalpa (see Temporal cosmology below), that is, the column of fire does not rise high enough to reach them. After the destruction of the world, at the beginning of the vivartakalpa, the worlds are first populated by beings reborn from the Ābhāsvara worlds.
- Ābhāsvara or Ābhassara (Tib: 'od gsal; देवनागरीः अभासभारा / अव्भसार) – The world of devas "possessing splendor". The lifespan of the Ābhāsvara devas is 8 mahākalpas (others: 2 mahākalpas). Eight mahākalpas is the interval between destructions of the universe by water, which includes the Ābhāsvara worlds. The height of this world is 81,920 yojanas above the Earth.
- Apramāṇābha or Appamāṇābha (Tib: tshad med 'od; देवनागरीः अप्रमानभ) – The world of devas of "limitless light", a concept on which they meditate. Their lifespan is 4 mahākalpas. The height of this world is 40,960 yojanas above the Earth.
- Parīttābha or Parittābha (Tib: 'od chung; परितव्भ) – The world of devas of "limited light". Their lifespan is 2 mahākalpas. The height of this world is 20,480 yojanas above the Earth.
The mental state of the devas of the Brahmā worlds (Jpn: 初禅三天; ब्रह्मलोक) corresponds to the first dhyāna, and is characterized by observation (vitarka) and reflection (vicāra) as well as delight (prīti) and joy (sukha). The Brahmā worlds, together with the other lower worlds of the universe, are destroyed by fire at the end of a mahākalpa (see Temporal cosmology below).
- Mahābrahmā (Tib: tshangs pa chen po; Jpn: 大梵天 Daibonten; देवनागरीः महाब्रह्मा) – the world of "Great Brahmā", believed by many to be the creator of the world, and having as his titles "Brahmā, Great Brahmā, the Conqueror, the Unconquered, the All-Seeing, All-Powerful, the Lord, the Maker and Creator, the Ruler, Appointer and Orderer, Father of All That Have Been and Shall Be." According to the Brahmajāla Sutta (DN.1), a Mahābrahmā is a being from the Ābhāsvara worlds who falls into a lower world through exhaustion of his merits and is reborn alone in the Brahma-world; forgetting his former existence, he imagines himself to have come into existence without cause. Note that even such a high-ranking deity has no intrinsic knowledge of the worlds above his own. Mahābrahmā is 1 1⁄2 yojanas tall. His lifespan variously said to be 1 kalpa (Vibhajyavāda tradition) or 1 1⁄2 kalpas long (Sarvāstivāda tradition), although it would seem that it could be no longer than 3⁄4 of a mahākalpa, i.e., all of the mahākalpa except for the Saṃvartasthāyikalpa, because that is the total length of time between the rebuilding of the lower world and its destruction. It is unclear what period of time "kalpa" refers to in this case. The height of this world is 10,240 yojanas above the Earth.
- Brahmapurohita (Tib: tshangs 'khor; देवनागरीः ब्रह्मपुरोहिता) – the "Ministers of Brahmā" are beings, also originally from the Ābhāsvara worlds, that are born as companions to Mahābrahmā after he has spent some time alone. Since they arise subsequent to his thought of a desire for companions, he believes himself to be their creator, and they likewise believe him to be their creator and lord. They are 1 yojana in height and their lifespan is variously said to be 1⁄2 of a kalpa (Vibhajyavāda tradition) or a whole kalpa (Sarvāstivāda tradition). If they are later reborn in a lower world, and come to recall some part of their last existence, they teach the doctrine of Brahmā as creator as a revealed truth. The height of this world is 5,120 yojanas above the Earth.
- Brahmapāriṣadya or Brahmapārisajja (Tib: tshangs ris; देवनागरीः ब्रह्मपरिषद / ब्रह्मपरिष्ज्ज) – the "Councilors of Brahmā" or the devas "belonging to the assembly of Brahmā". They are also called Brahmakāyika, but this name can be used for any of the inhabitants of the Brahma-worlds. They are half a yojana in height and their lifespan is variously said to be 1⁄3 of a kalpa (Vibhajyavāda tradition) or 1⁄2 of a kalpa (Sarvāstivāda tradition). The height of this world is 2,560 yojanas above the Earth.
Desire Realm (Kāmadhātu / कामधातु)
The beings born in the Kāmadhātu (Pāli: Kāmaloka; Tib: 'dod pa'i khams; Jpn: 欲界 Yoku-kai; देवनागरीः कामधातु) differ in degree of happiness, but they are all, other than Anagamis, Arhats and Buddhas, under the domination of Māra and are bound by sensual desire, which causes them suffering.
The following four worlds are bounded planes, each 80,000 yojanas square, which float in the air above the top of Mount Sumeru. Although all of the worlds inhabited by devas (that is, all the worlds down to the Cāturmahārājikakāyika world and sometimes including the Asuras) are sometimes called "heavens", in the western sense of the word the term best applies to the four worlds listed below:
- Parinirmita-vaśavartin or Paranimmita-vasavatti (Tib: gzhan 'phrul dbang byed; Jpn: 他化自在天 Takejizai-ten; देवनागरीः परनिमित्त-वशवती) – The heaven of devas "with power over (others') creations". These devas do not create pleasing forms that they desire for themselves, but their desires are fulfilled by the acts of other devas who wish for their favor. The ruler of this world is called Vaśavartin (Pāli: Vasavatti), who has longer life, greater beauty, more power and happiness and more delightful sense-objects than the other devas of his world. This world is also the home of the devaputra (being of divine race) called Māra, who endeavors to keep all beings of the Kāmadhātu in the grip of sensual pleasures. Māra is also sometimes called Vaśavartin, but in general these two dwellers of this world are kept distinct. The beings of this world are 4,500 feet (1,400 m) tall and live for 9,216,000,000 years (Sarvāstivāda tradition). The height of this world is 1,280 yojanas above the Earth.
- Nirmāṇarati or Nimmānaratī (Tib: 'phrul dga' ; Jpn: 化楽天 Keraku-ten; देवनागरीः निम्मरथी / निम्मरती)– The world of devas "delighting in their creations". The devas of this world are capable of making any appearance to please themselves. The lord of this world is called Sunirmita (Pāli: Sunimmita); his wife is the rebirth of Visākhā, formerly the chief of the upāsikās (female lay devotees) of the Buddha. The beings of this world are 3,750 feet (1,140 m) tall and live for 2,304,000,000 years (Sarvāstivāda tradition). The height of this world is 640 yojanas above the Earth.
- Tuṣita or Tusita (Tib: dga' ldan; Jpn: 兜率天 Tosotsu-ten;देवनागरीः तुषिता) – The world of the "joyful" devas. This world is best known for being the world in which a Bodhisattva lives before being reborn in the world of humans. Until a few thousand years ago, the Bodhisattva of this world was Śvetaketu (Pāli: Setaketu), who was reborn as Siddhārtha, who would become the Buddha Śākyamuni; since then the Bodhisattva has been Nātha (or Nāthadeva) who will be reborn as Ajita and will become the Buddha Maitreya (Pāli Metteyya). While this Bodhisattva is the foremost of the dwellers in Tuṣita, the ruler of this world is another deva called Santuṣita (Pāli: Santusita). The beings of this world are 3,000 feet (910 m) tall and live for 576,000,000 years (Sarvāstivāda tradition). The height of this world is 320 yojanas above the Earth.
- Yāma (Tib: 'thab bral; Jpn: 夜摩天 Yama-ten; देवनागरीः यामा भुवन / यम लोक) – Sometimes called the "heaven without fighting", because it is the lowest of the heavens to be physically separated from the tumults of the earthly world. These devas live in the air, free of all difficulties. Its ruler is the deva Suyāma; according to some, his wife is the rebirth of Sirimā, a courtesan of Rājagṛha in the Buddha's time who was generous to the monks. The beings of this world are 2,250 feet (690 m) tall and live for 144,000,000 years (Sarvāstivāda tradition). The height of this world is 160 yojanas above the Earth.
Worlds of Sumeru सुमेरू । सुनेरू
The world-mountain of Sumeru is an immense, strangely shaped peak which arises in the center of the world, and around which the Sun and Moon revolve. Its base rests in a vast ocean, and it is surrounded by several rings of lesser mountain ranges and oceans. The three worlds listed below are all located on, or around, Sumeru: the Trāyastriṃśa; देवनागरीः त्रायतीस /त्रायतीम्स devas live on its peak, the Cāturmahārājikakāyika devas चर्तुर-महाराजिक live on its slopes, and the Asuras असुर live in the ocean at its base. Sumeru and its surrounding oceans and mountains are the home not just of these deities, but also vast assemblies of beings of popular mythology who only rarely intrude on the human world.
- Trāyastriṃśa or Tāvatiṃsa (Tib: sum cu rtsa gsum pa; Jpn: 忉利天 Tōri-ten; देवनागरीःत्रायतीम्स) – The world "of the Thirty-three (devas)" is a wide flat space on the top of Mount Sumeru, filled with the gardens and palaces of the devas. Its ruler is Śakra देवेन्द्र शक्र devānām indra, "Śakra, lord of the devas". Besides the eponymous Thirty-three devas, many other devas and supernatural beings dwell here, including the attendants of the devas and many heavenly courtesansapsaras अप्सरा (nymphs). The beings of this world are 1,500 feet (460 m) tall and live for 36,000,000 years (Sarvāstivāda tradition) or 3/4 of a yojana tall and live for 30,000,000 years (Vibhajyavāda tradition). The height of this world is 80 yojanas above the Earth.
- Cāturmahārājikakāyika or Cātummahārājika (Tib: rgyal chen bzhi; Jpn: 四大王衆天 Shidaiōshu-ten; देवनागरीःचर्तु-महाराजिक) – The world "of the Four Great Kings" is found on the lower slopes of Mount Sumeru, though some of its inhabitants live in the air around the mountain. Its rulers are the four Great Kings of the name, Virūḍhaka विरुद्धक, Dhṛtarāṣṭra धृतराष्ट्र, Virūpākṣa विरुपाक्ष, and their leader Vaiśravaṇa वैश्यवर्ण. The devas who guide the Sun and Moon are also considered part of this world, as are the retinues of the four kings, composed of Kumbhāṇḍas कुम्भाण्ड (dwarfs), Gandharva गन्धर्वs (fairies), Nāgas (dragons) and Yakṣas यक्ष (goblins). The beings of this world are 750 feet (230 m) tall and live for 9,000,000 years (Sarvāstivāda tradition) or 90,000 years (Vibhajyavāda tradition). The height of this world is from sea level up to 40 yojanas above the Earth.
- Asura (Tib: lha ma yin; Jpn: 阿修羅 Ashura; देवनागरीः असुर) – The world of the Asuras is the space at the foot of Mount Sumeru, much of which is a deep ocean. It is not the Asuras' original home, but the place they found themselves after they were hurled, drunken, from Trāyastriṃśa where they had formerly lived. The Asuras are always fighting to regain their lost kingdom on the top of Mount Sumeru, but are unable to break the guard of the Four Great Kings. The Asuras are divided into many groups, and have no single ruler, but among their leaders are Vemacitrin (Pāli: Vepacitti वेपचित्ती) and Rāhu.
- Manuṣyaloka मनुष्यलोक (Tib: mi; Jpn: 人 nin) – This is the world of humans and human-like beings who live on the surface of the earth. The mountain-rings that engird Sumeru are surrounded by a vast ocean, which fills most of the world. The ocean is in turn surrounded by a circular mountain wall called Cakravāḍa (Pāli: Cakkavāḷa चक्रवाल) which marks the horizontal limit of the world. In this ocean there are four continents which are, relatively speaking, small islands in it. Because of the immenseness of the ocean, they cannot be reached from each other by ordinary sailing vessels, although in the past, when the cakravartin kings ruled, communication between the continents was possible by means of the treasure called the cakraratna (Pāli cakkaratana चक्ररत्न), which a cakravartin चक्रवर्ति and his retinue could use to fly through the air between the continents. The four continents are:
- Jambudvīpa or Jambudīpa (Jpn: 閻浮提 Enbudai; देवनागरीः जम्वुद्धिप) is located in the south and is the dwelling of ordinary human beings. It is said to be shaped "like a cart", or rather a blunt-nosed triangle with the point facing south. (This description probably echoes the shape of the coastline of southern India.) It is 10,000 yojanas in extent (Vibhajyavāda tradition) or has a perimeter of 6,000 yojanas (Sarvāstivāda tradition) to which can be added the southern coast of only 3 1⁄2 yojanas' length. The continent takes its name from a giant Jambu tree (Syzygium cumini। गुलाव-जामुन), 100 yojanas tall, which grows in the middle of the continent. Every continent has one of these giant trees. All Buddhas appear in Jambudvīpa. The people here are five to six feet tall and their length of life varies between 10 to power 140 years (Asankya Aayu) and 10 years.
- Pūrvavideha पूर्वविदेह or Pubbavidehaपूव्वविदेह is located in the east, and is shaped like a semicircle with the flat side pointing westward (i.e., towards Sumeru). It is 7,000 yojanas in extent (Vibhajyavāda tradition) or has a perimeter of 6,350 yojanas of which the flat side is 2,000 yojanas long (Sarvāstivāda tradition). Its tree is the acacia. The people here are about 12 feet (3.7 m) tall and they live for 250 years.
- Aparagodānīya अपारगोदनिय or Aparagoyāna अपारगोयन is located in the west, and is shaped like a circle with a circumference of about 7,500 yojanas (Sarvāstivāda tradition). The tree of this continent is a giant Kadamba tree. The human inhabitants of this continent do not live in houses but sleep on the ground. They are about 24 feet (7.3 m) tall and they live for 500 years.
- Uttarakuru उत्तरकुरु is located in the north, and is shaped like a square. It has a perimeter of 8,000 yojanas, being 2,000 yojanas on each side. This continent's tree is called a kalpavṛkṣa कल्पवृक्ष (Pāli: kapparukkha कप्परुक्ख) or kalpa-tree, because it lasts for the entire kalpa. The inhabitants of Uttarakuru have cities built in the air. They are said to be extraordinarily wealthy, not needing to labor for a living – as their food grows by itself – and having no private property. They are about 48 feet (15 m) tall and live for 1,000 years, and they are under the protection of Vaiśravaṇa.
- Tiryagyoni-loka or Tiracchāna-yoni (Tib: dud 'gro; Jpn: 畜生 chikushō; देवनागरीः तिरिछन्न योनी) – This world comprises all members of the animal kingdom that are capable of feeling suffering, regardless of size.
- Pretaloka or Petaloka (Tib: yi dwags; देवनागरीः प्रेत लोक) – The pretas, or "hungry ghosts", are mostly dwellers on earth, though due to their mental state they perceive it very differently from humans. They live for the most part in deserts and wastelands.
Hells (Narakas नरक)
Naraka नरक or Niraya निरय (Tib: dmyal ba; देवनागरीः नरक) is the name given to one of the worlds of greatest suffering, usually translated into English as "hell" or "purgatory". As with the other realms, a being is born into one of these worlds as a result of his karma, and resides there for a finite length of time until his karma has achieved its full result, after which he will be reborn in one of the higher worlds as the result of an earlier karma that had not yet ripened. The mentality of a being in the hells corresponds to states of extreme fear and helpless anguish in humans.
Physically, Naraka is thought of as a series of layers extending below Jambudvīpa into the earth. There are several schemes for counting these Narakas and enumerating their torments. One of the more common is that of the Eight Cold Narakas and Eight Hot Narakas.
- Arbuda अर्बुद – the "blister" Naraka
- Nirarbuda निरर्बुद – the "burst blister" Naraka
- Ataṭa अतट – the Naraka of shivering
- Hahava हहव – the Naraka of lamentation
- Huhuva हुहुव – the Naraka of chattering teeth
- Utpala उत्पल – the Naraka of skin becoming blue as a blue lotus
- Padma पद्म – the Naraka of cracking skin
- Mahāpadma महापद्म – the Naraka of total frozen bodies falling apart
Each lifetime in these Narakas is twenty times the length of the one before it.
- Sañjīva सञ्जीव – the "reviving" Naraka. Life in this Naraka is 162*1010 years long.
- Kālasūtra कालसूत्र – the "black thread" Naraka. Life in this Naraka is 1296*1010 years long.
- Saṃghāta सङ्घात – the "crushing" Naraka. Life in this Naraka is 10,368*1010 years long.
- Raurava/Rīrava रौरव/रीरव – the "screaming" Naraka. Life in this Naraka is 82,944*1010 years long.
- Mahāraurava/Mahārīrava महारौरव/महारीरव – the "great screaming" Naraka. Life in this Naraka is 663,552*1010 years long.
- Tāpana/Tapana तापन/तपन – the "heating" Naraka. Life in this Naraka is 5,308,416*1010 years long.
- Mahātāpana महातापन – the "great heating" Naraka. Life in this Naraka is 42,467,328*1010 years long.
- Avīci अवीचि – the "uninterrupted" Naraka. Life in this Naraka is 339,738,624*1010 years long.
The foundations of the earth
All of the structures of the earth, Sumeru and the rest, extend downward to a depth of 80,000 yojanas below sea level – the same as the height of Sumeru above sea level. Below this is a layer of "golden earth", a substance compact and firm enough to support the weight of Sumeru. It is 320,000 yojanas in depth and so extends to 400,000 yojanas below sea level. The layer of golden earth in turn rests upon a layer of water, which is 8,000,000 yojanas in depth, going down to 8,400,000 yojanas below sea level. Below the layer of water is a "circle of wind", which is 16,000,000 yojanas in depth and also much broader in extent, supporting 1,000 different worlds upon it. Yojanas are equivalent to about 13 km (8 mi).
Sahasra means "one thousand". All of the planes, from the plane of neither perception nor non-perception (nevasanna-asanna-ayatana) down to the Avici – the "uninterrupted" or "unceasing" (avici literally means "without interval") niraya – constitutes the single world-system, cakkavala (intimating something circular, a "wheel", but the etymology is uncertain), described above. In modern parlance it would be called a 'universe', or 'solar system'.
A collection of one thousand solar systems are called a "thousandfold minor world-system" (culanika lokhadhatu). Or small chiliocosm.
A collection of 1,000 times 1,000 world-systems (one thousand squared) is a "thousandfold to the second power middling world-system" (dvisahassi majjhima lokadhatu). Or medium dichiliocosm.
The largest grouping, which consists of one thousand cubed world-systems, is called the "tisahassi mahasassi lokadhatu". Or great trichiliocosm.
The Tathagata, if he so wished, could effect his voice throughout a great trichiliocosm. He does so by suffusing the trichiliocosm with his radiance, at which point the inhabitants of those world-system will perceive this light, and then proceeds to extend his voice throughout that realm.
The word kalpa, means 'moment'. A maha kalpa consists of four moments (kalpa), the first of which is creation. The creation moment consists of the creation of the "receptacle", and the descent of beings from higher realms into more coarse forms of existence. During the rest of the creation moment, the world is populated. Human beings who exist at this point have no limit on their lifespan. The second moment is the duration moment, the start of this moment is signified by the first sentient being to enter hell (niraya), the hells and nirayas not existing or being empty prior to this moment. The duration moment consists of twenty "intermediate" moments (antarakappas), which unfold in a drama of the human lifespan descending from 80,000 years to 10, and then back up to 80,000 again. The interval between 2 of these "intermediate" moments is the "seven day purge", in which a variety of humans will kill each other (not knowing or recognizing each other), some humans will go into hiding. At the end of this purge, they will emerge from hiding and repopulate the world. As of May 2015, it seems the lifespan of humans is 80 years, during the time of Gotama Buddha it was 100 years. After this purge, the lifespan will increase to 80,000, reach its peak and descend, at which point the purge will happen again.
Within the duration 'moment', this purge and repeat cycle seems to happen around 18 times, the first "intermediate" moment consisting only of the descent from 80,000—the second intermediate moment consisting of a rise and descent, and the last consisting only of an ascent.
After the duration 'moment' is the dissolution moment, the hells will gradually be emptied, as well as all coarser forms of existence. The beings will flock to the form realms (rupa dhatu), a destruction of fire occurs, sparing everything from the realms of the 'radiant' gods and above (abha deva).
After 7 of these destructions by 'fire', a destruction by water occurs, and everything from the realms of the 'pleasant' gods and above is spared (subha deva).
After 64 of these destructions by fire and water, that is—56 destructions by fire, and 7 by water—a destruction by wind occurs, this eliminates everything below the realms of the 'fruitful' devas (vehapphala devas, literally of "great fruit"). The pure abodes (suddhavasa, meaning something like pure, unmixed, similar to the connotation of "pure bred German shepherd"), are never destroyed. Although without the appearance of a Buddha, these realms may remain empty for a long time. It should be noted that the inhabitants of these realms have exceedingly long life spans.
The formless realms are never destroyed because they do not consist of form (rupa). The reason the world is destroyed by fire, water and wind, and not earth is because earth is the 'receptacle'.
After the dissolution moment, this particular world system remains dissolved for a long time, this is called the 'empty' moment, but the more accurate term would be "the state of being dissolved". The beings that inhabited this realm formerly will migrate to other world systems, and perhaps return if their journeys lead here again.
Buddhist temporal cosmology describes how the universe comes into being and is dissolved. Like other Indian cosmologies, it assumes an infinite span of time and is cyclical. This does not mean that the same events occur in identical form with each cycle, but merely that, as with the cycles of day and night or summer and winter, certain natural events occur over and over to give some structure to time.
The basic unit of time measurement is the mahākalpa or "Great Eon" (Jpn: 大劫 daigō; देवनागरीः महाकल्प / महाकप्प). The length of this time in human years is never defined exactly, but it is meant to be very long, to be measured in billions of years if not longer.
A mahākalpa is divided into four kalpas or "eons" (Jpn: 劫 kō; अन्तरकल्प), each distinguished from the others by the stage of evolution of the universe during that kalpa. The four kalpas are:
- Vivartakalpa विवर्तकल्प "Eon of evolution" – during this kalpa the universe comes into existence.
- Vivartasthāyikalpa विवर्तस्थायिकल्प "Eon of evolution-duration" – during this kalpa the universe remains in existence in a steady state.
- Saṃvartakalpa संवर्तकल्प "Eon of dissolution" – during this kalpa the universe dissolves.
- Saṃvartasthāyikalpa संवर्तस्थायिकल्प "Eon of dissolution-duration" – during this kalpa the universe remains in a state of emptiness.
Each one of these kalpas is divided into twenty antarakalpas अन्तरकल्प (Pāli: antarakappa अन्तरकप्प; Jpn: 中劫, "inside eons") each of about the same length. For the Saṃvartasthāyikalpa this division is merely nominal, as nothing changes from one antarakalpa to the next; but for the other three kalpas it marks an interior cycle within the kalpa.
The Vivartakalpa begins with the arising of the primordial wind, which begins the process of building up the structures of the universe that had been destroyed at the end of the last mahākalpa. As the extent of the destruction can vary, the nature of this evolution can vary as well, but it always takes the form of beings from a higher world being born into a lower world. The example of a Mahābrahmā being the rebirth of a deceased Ābhāsvara deva is just one instance of this, which continues throughout the Vivartakalpa until all the worlds are filled from the Brahmaloka down to Naraka. During the Vivartakalpa the first humans appear; they are not like present-day humans, but are beings shining in their own light, capable of moving through the air without mechanical aid, living for a very long time, and not requiring sustenance; they are more like a type of lower deity than present-day humans are.
Over time, they acquire a taste for physical nutriment, and as they consume it, their bodies become heavier and more like human bodies; they lose their ability to shine, and begin to acquire differences in their appearance, and their length of life decreases. They differentiate into two sexes and begin to become sexually active. Then greed, theft and violence arise among them, and they establish social distinctions and government and elect a king to rule them, called Mahāsammata। महासम्मत, "the great appointed one". Some of them begin to hunt and eat the flesh of animals, which have by now come into existence.
The Vivartasthāyikalpa begins when the first being is born into Naraka, thus filling the entire universe with beings. During the first antarakalpa of this eon, human lives are declining from a vast but unspecified number of years (but at least several tens of thousands of years) toward the modern lifespan of less than 100 years. At the beginning of the antarakalpa, people are still generally happy. They live under the rule of a universal monarch or "wheel-turning king" (Sanskrit: cakravartin चक्रवर्ति; Jpn: 転輪聖王 Tenrin Jō-ō), who conquer. The Mahāsudassana-sutta (DN.17) tells of the life of a cakravartin king, Mahāsudassana (Sanskrit: Mahāsudarśana) who lived for 336,000 years. The Cakkavatti-sīhanāda-sutta (DN.26) tells of a later dynasty of cakravartins, Daḷhanemi (Sanskrit: Dṛḍhanemi) and five of his descendants, who had a lifespan of over 80,000 years. The seventh of this line of cakravartins broke with the traditions of his forefathers, refusing to abdicate his position at a certain age, pass the throne on to his son, and enter the life of a śramaṇa श्रमण. As a result of his subsequent misrule, poverty increased; as a result of poverty, theft began; as a result of theft, capital punishment was instituted; and as a result of this contempt for life, murders and other crimes became rampant.
The human lifespan now quickly decreased from 80,000 to 100 years, apparently decreasing by about half with each generation (this is perhaps not to be taken literally), while with each generation other crimes and evils increased: lying, greed, hatred, sexual misconduct, disrespect for elders. During this period, according to the Mahāpadāna-sutta (DN.14) three of the four Buddhas of this antarakalpa lived: Krakucchanda Buddha (Pāli: Kakusandha ककुछन्द), at the time when the lifespan was 40,000 years; Kanakamuni कनकमुनी Buddha (Pāli: Konāgamana कोनागमन) when the lifespan was 30,000 years; and Kāśyapa काश्यप Buddha (Pāli: Kassapa कस्सप) when the lifespan was 20,000 years.
Our present time is taken to be toward the end of the first antarakalpa of this Vivartasthāyikalpa, when the lifespan is less than 100 years, after the life of Śākyamuni Buddha (Pāli: Sakyamuni शाक्यमुनी), who lived to the age of 80.
The remainder of the antarakalpa is prophesied to be miserable: lifespans will continue to decrease, and all the evil tendencies of the past will reach their ultimate in destructiveness. People will live no longer than ten years, and will marry at five; foods will be poor and tasteless; no form of morality will be acknowledged. The most contemptuous and hateful people will become the rulers. Incest will be rampant. Hatred between people, even members of the same family, will grow until people think of each other as hunters do of their prey.
Eventually a great war will ensue, in which the most hostile and aggressive will arm themselves and go out to kill each other. The less aggressive will hide in forests and other secret places while the war rages. This war marks the end of the first antarakalpa.
At the end of the war, the survivors will emerge from their hiding places and repent their evil habits. As they begin to do good, their lifespan increases, and the health and welfare of the human race will also increase with it. After a long time, the descendants of those with a 10-year lifespan will live for 80,000 years, and at that time there will be a cakravartin king named Saṅkha शंख. During his reign, the current bodhisattva in the Tuṣita तुषिता heaven will descend and be reborn under the name of Ajita अजित. He will enter the life of a śramaṇa श्रमण and will gain perfect enlightenment बोधीज्ञान as a Buddha; and he will then be known by the name of Maitreya (मैत्रेय, Pāli: Metteyya मेत्तय).
After Maitreya's time, the world will again worsen, and the lifespan will gradually decrease from 80,000 years to 10 years again, each antarakalpa being separated from the next by devastating war, with peaks of high civilization and morality in the middle. After the 19th antarakalpa, the lifespan will increase to 80,000 and then not decrease, because the Vivartasthāyikalpa will have come to an end.
The Saṃvartakalpa begins when beings cease to be born in Naraka. This cessation of birth then proceeds in reverse order up the vertical cosmology, i.e., pretas then cease to be born, then animals, then humans, and so on up to the realms of the deities.
When these worlds as far as the Brahmaloka are devoid of inhabitants, a great fire consumes the entire physical structure of the world. It burns all the worlds below the Ābhāsvara worlds. When they are destroyed, the Saṃvartasthāyikalpa begins.
There is nothing to say about the Saṃvartasthāyikalpa, since nothing happens in it below the Ābhāsvara worlds. It ends when the primordial wind begins to blow and build the structure of the worlds up again.
The destruction by fire is the normal type of destruction that occurs at the end of the Saṃvartakalpa. But every eighth mahākalpa, after seven destructions by fire, there is a destruction by water. This is more devastating, as it eliminates not just the Brahma worlds but also the Ābhāsvara worlds.
Every sixty-fourth mahākalpa, after fifty six destructions by fire and seven destructions by water, there is a destruction by wind. This is the most devastating of all, as it also destroys the Śubhakṛtsna worlds. The higher worlds are never destroyed.
- Authors, Various. "Aṅguttara Nikāya 007. Mahavagga- The greater section". Mettanet - Lanka. Retrieved 7 May 2015.
Having developed loving kindness for seven years, he did not come to this world for seven forward and backward world cycles.
- Authors, Various (2011). Collected Wheel Publications Volume XIV: Numbers 198–215. Buddhist Publication Society.
I did not return to this world for seven aeons of world-contraction and world-expansion.
- Nyanatiloka. "kappa". Tipitaka (Drei-Korb), der Pali Kanon des Theravāda-Buddhismus. Retrieved 7 May 2015.
- Tan, Piya. "Aggañña Sutta" (PDF). The Dharmafarers. Retrieved 7 May 2015.
Then the female developed female organs,87 and the male developed male organs.
- Tan, Piya. "Satta Suriya Sutta" (PDF). The Dharmafarers. Retrieved 27 May 2016.
There comes a time, bhikshus, after a long time, a seventh sun appears.
- Authors, Various. "Aṅguttara Nikāya 3. Tika Nipāta 8. Anandavaggo". Mettanet - Lanka. Retrieved 27 May 2016.
Here Ānanda, the Thus Gone One pervades the three thousandfold and the great thousandfold world system with an effulgent light, so that those sentient beings see it, then the Thus Gone One makes a sound. In this manner an announcement is made to the three thousandfold and the great thousandfold world system if he desires.
- Tan, Piya. "Saleyyaka Sutta" (PDF). The Dharmafarers. Retrieved 7 May 2015.
I would arise in fellowship with the gods of boundless radiance (appaman’abha deva)!’
- Gethin, Rupert (1998). The Foundations of Buddhism. Oxford: Oxford University Press. pp. Chapter 5. ISBN 0-19-289223-1.
- Susan Elbaum Jootla "Teacher of the Devas": The Wheel Publication No. 414/416 (Kandy: Buddhist Publication Society, 1997) article link at Access to Insight Archived February 4, 2013, at the Wayback Machine.
- "Saturn | planet". Encyclopedia Britannica. Retrieved 2017-06-08.
- Jayatilleke, K.N. "Facets of Buddhist Thought". Buddhist Publication Society. Buddhist Publication Society. Retrieved 7 May 2015.
The early Buddhist texts too do not state that the Major World-System is all there is, in the universe, for the question as to whether the world is finite or infinite (ananto) in extent is left unanswered (avyakata). The later commentarial tradition however goes a step further. One of the synonyms for a “world-system” or loka-dhatu is cakkavala, a word of uncertain etymology meaning a “wheel’, “circle” or “sphere.”
- Authors, Various. "Aṅguttara Nikāya 3. Tika Nipāta 8. Anandavaggo". Mettanet - Lanka. Retrieved 7 May 2015.
- Bhikkhu, Bodhi (2005). The Long Discourses of the Buddha. Simon and Schuster. ISBN 9780861719792.
he is of the Gotama clan; in his time the life-span is short, limited and quick to pass: it is seldom that anybody lives to be a hundred.
- "The World: Life Expectancy (2015) - Top 100+". Gazetteer - The World At Your Fingertips. Retrieved 7 May 2015.
- Kloetzli, Randy (1983). Buddhist Cosmology: From Single World System to Pure Land : Science and Theology in the Images of Motion and Light. Motilal Banarsidass Publishe.
The divisions of cosmic time outlined in the Kosa are predictably elaborate
- Thera, Ñanamoli; Bodhi, Bhikkhu. "Maha-sihanada Sutta: The Great Discourse on the Lion's Roar". Access to Insight. Retrieved 7 May 2015.
But it is impossible to find a realm in the round that I have not already  passed through in this long journey, except for the gods of the Pure Abodes;
- Dīghanikāya दिघनिकाय, Sutta 27 (Aggañña Sutta), sections 10-11.
- Dīghanikāya, Sutta 27 (Aggañña Sutta), sections 12-26.
- Dīghanikāya, Sutta 26 (Cakkavattisīhanādasutta), sections 19-20.
- Dīghanikāya, Sutta 26 (Cakkavattisīhanādasutta), sections 21.
- Robert E. Buswell Jr.; Donald S. Lopez Jr. (2013). The Princeton Dictionary of Buddhism. Princeton, New Jersey: Princeton University Press. ISBN 9781400848058. Retrieved 22 June 2015.
- Buswell, Robert E., ed. (2004). Encyclopedia of Buddhism (Cosmology). Macmillan Reference USA. p. 183-187. ISBN 0-02-865718-7.
- Trainor, Kevin (2004). Buddhism: The Illustrated Guide. Oxford: Oxford University Press. ISBN 9780195173987. Retrieved 22 June 2015.